Characterization of wall temperature distributions in a gas turbine model combustor measured by 2D phosphor thermometry
نویسندگان
چکیده
Abstract Instantaneous 2D phosphor thermometry was performed on the windows and combustion chamber posts of an optically accessible dual-swirl gas turbine model combustor operated with CH4 at atmospheric pressure. Two phosphors were used in order to measure different surface temperature ranges: YAP:Eu (temperature range 850?K – 1150?K) YAG:Eu 1100?K 1300?K). Phosphor coatings applied post three vertically oriented stripes one window. Using interpolation, this allowed determination complete Heat losses across window determined by measuring inner outer The coating illuminated using fourth harmonic a Nd:YAG laser, which formed into broad light sheet. spatially resolved, temperature-dependent decay rate phosphorescence measured high speed CMOS camera. Three flames similar flow fields thermal powers between 22.5 kW and 30?kW equivalence ratios 0.63 0.83 studied. Because flame characteristics including field, heat release distributions known from previous measurements interaction could be examined. In way, wall temperatures explained.
منابع مشابه
Acoustic Behavior of a Partially-Premixed Gas Turbine Model Combustor
Combustion instabilities in gas turbine engines often give rise to acoustic resonances. These resonances occur as manifestations of different acoustic modes, of which a single or multiple modes may be present. In this work, the acoustic behavior of a model gas turbine combustor, developed at DLR Stuttgart by Meier, was investigated using both syn(thetic) gas and standard hydrocarbon fuels. Syng...
متن کاملLarge Eddy Simulation of a Gas Turbine Model Combustor
The current design of gas-turbine (GT) systems is driven by the need for increased powerdensities, improved fuel-efficiencies, and reduced life cycle costs and environmental impact. Computational techniques have the potential for providing valuable information for the design of GT combustion systems, if adequate models are available. Over recent years, remarkable progress has been made in the d...
متن کاملParametric Modelling System of Gas Turbine Combustor
Original scientific paper In the numerical simulation research of gas turbine combustor, there are plenty repetitive operations such as modelling and meshing. Parametric design idea is about simplifying it. This paper establishes a parametric modelling system of gas turbine combustor, mainly for the flame tube components, which includes parametric modelling and simple mesh generation. Taking a ...
متن کاملInfluence of Thermal Radiation Models on Prediction of Reactive Swirling Methane/Air Flame in a Model Gas Turbine Combustor
A numerical simulation of reactive swirling methane/air non-premixed flame in a new three-dimensional model combustion chamber is carried out to assess the performance of two thermal radiation models, namely, the Discrete Transfer Radiation Model and the P-1 Model. A Finite Volume staggered grid approach is employed to solve the governing equations.The second-order upwind scheme is applied for...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Combustion Institute
سال: 2021
ISSN: ['1873-2704', '1540-7489']
DOI: https://doi.org/10.1016/j.proci.2020.06.088